Milling-machine spindle-head.



50H1@ ld.. JOHNSON, 0F LROCKFORD, ILIINOIS, ASSIGrlllOR' TO THEING'ERSOLL MILLING: ACHNE COMEANY, C?? ROCKFRD, ILLINIS, A CORPORATIONOF LLINOS.

Iv'IILLNGr-MACHINE SPINDLE-HEAD.

Specication of Letters Patent.

Patented d une 3io, lllllf..

Application led September 9, 1913. Serial No. 7`88,801.

To all viz/1,0m it may concern it known that l, JOHN R. Jonsson, acitizen of the United States, residing" at Rockford, in the county oflVinnebago and the State of illinois, have invented certain new anduseful improvements in li/lilling,-- .viachineSpindlelleads, of whichthe following is a specification.

This'invention relates to spindle heads for milling machines and has forone of its objects the construction of an improved spindle headembodying two telescoping spindles and means for driving' saine atvarious speeds.

Further objects aire toprovide means for simultaneously, and inproviding means for maintaining the inner spindle concentric with theouter spindle. l

Another object of iny invention is to equip a. spindlejwith a cutterface-plate and to provide means 'lor driving the spindle at its:taco-plate end, whereby `-the drive is transmitted directly to thecutter devoid oi?- torsional variances which; cause chattering oi thecutter thereby producing defective and unsatisfactory cutting. ln-theaccompanying drawings Figure 1 is face vieuT in elevation of a. millinginachine of 'the planer milling type and illus trating my improvedspindle heads applied thereto, the means for driving the spindledriveshazts not being shown'. Fig. 2 is a view or" a vertical spindlehead with its :front casing removed 'and parts shown in section toillustrate the drive `means. Fig. 3 is a view looking at the right sideof Fig. 2, and with the outer casing broke-n in section. Fig. el is aplan section view taken on the line leed of Fig. 1. Eig. 5 is aplansection vie'v-J taken on the line? 5-5 oflig. 1. Fig. 6 is afdetailvertical sectional View taken on the line of section 6 6 of Fig. 4. Fig.7 is a tace View of the 'drive end of the horizontal spindle head` shownat the rightl in 1, :illustrating the power feed mechanism for the innerspindle. Fig. 8 is an end view of Fig. 7, a portion of the Worm-gearcasing being broken.- aWay. Fig. 9 is a detail sectional vievv'takensubstantially on the line il--l oi? Fig. 8.. Fig. l is a detail view.oif

Worrngea-r drive .end which is broken in We". 8. i

My' improvements are illustrated in the iieedinfr the spindlesseparately, means for*- 'locling the spindles together to feedbothdrawings applied to a milling machine hav- Ing a bed 7 With a Workcarrying table 8 mounted slidable thereon, vertical side housings 9provided' with beveled slide-Ways, and a horizontal cross-housing 10having1 slide- Ways, these housing slideivays providing supporting meansupon which the spindle heads 'mounted upon the Work carrying table 8.

lThese spindle heads are of a like construction with 'the exception thatthe horizontal head at the lett in Fig. 1 and the vertical head which isillustrated in section in Figs. 2 to 6 inclusive, has their innerspindle constructed to be hand operated 'fior feeding and adjustinglongitudinally, thisspindle construction being; a inodilied form; whilein Figs. 7 and 8 is shown the remaining horizontal spindle head having'its inner spindle extended and providedl 'with rneans for adjustinglsaine lengitudinallyv a-,nd`povver operated inea-ns for feedingit-lilrewise; therefore with the exception noted, like referencenumerals Will apply to like parts on both the horizontal and verticalheads.

Referring vto the vertical spindle head,v it has a base' portion 13which is provided With slideway engagements 14, at its upper portionwith a casing 15, and journals 16 in which the shaft 12 is disposed, thecap 17 forming a closure' forv the top of said casing,r 15. A beveledpinion gear 18 is mounted splined upon shaft 12, in one of said journals16 and heldy with the base 18 by a .collar 19, and is in mesh with abeveled gear 20 Which has connectedfixedly therewith a spur gear Q1Wfhieh is mounted upona stub shaft 2Q- that has a portion straddlingshaft 12 and has .ends 24 journaled in the top 1'? `and base 15. Asecondary spindle drishaft at right angles to the drive shaft 12 is:mounted s pl'ined at one end in a gear and sleeve 26 which is-journaledin base 15. A spindle carriage 2l' is mounted slidable jvertically inslideways 28 and gib 29 in connection with the base 13, and is formedWith a lateral` extension 30 Which has'journaled therein a rollerbearing 31 inclosed in' fa casing, in which bearing is journaled thesaid shaft at the top end of said roller bearing easing.' A taperedsleeve spindle 34 is journaled in theextension 30 with a head 35 inabutment with the under side'of said extension, said head having a spurgear or bull-gear 36 bolted to its under face, the spur gear being inmesh with the inion 32 and serving as a face-plate holding means towhich a cutter 37 is secured. An inner spindle 38 having a peripheralrack face 39 (modified form of spindle end) and adapted toaearry acutter 40 :at its lower end is journaled in said sleeve spindle 34,splined through key-way 41 and has its upper end journaled in a bearing42l in the base 13. The upper-end portion of sleeve spindle 34 isthreaded, and screwed thereupon is a nut 43 which bears against endthrust-bearing 44 and holds the sleeve spindle from longitudinaldisplacement on said'extension 30; and fixed to the end of .said sleevespindle is a spur gear 45 with which gear 33 when shifted, is

. adapted to mesh. A-plate'46 is fixed to the upper side of gear 45 andhas a tapered screw-threaded sleeve -extension 47 fitting about spindle38 and split at 48 so that the lock-nut 49 when tightened upon saidsleeve extension will lock the shaft spindle and sleeve spindle one withthe-other. A spur pinion 50 is carried by the base 13, in mesh with therack face of spindle 38, and is adapted to be hand operated to berotated to slide said spindle longitudinally in the sleeve spindle 34.The preferred type of in* ner spindle has no peripheral rack face buthas its adjusting end journaled in a bear* ing 64, Fig. 7, which isformed with the easing cover 17, and said spindle has a reduced end uponwhich is loosely mounted a sleeve member 66 'having a rack face G7 and asplined connection with said cover 17, the opposite ends of the sleevemember abutting the thrust-bearing 63 and the collared end 6 9 of thespindle. A shaft 70 is journaled in the cover 17 and has a' pinion 71 inmesh with rack face 67, a hand operable end 72 vand a worin-gear 73loosely mounted upon its opposite end, this wormgear having a sleeveextension 74 with a clutchface at the end thereof; and a handoperatedcluteh'member 75 keyed to shaft has a clutch face engageablewith said worm-gear clutch face. A. shaft 76 having a longitudinalkeyway is journaled in an extension of cover 17 and a worin 77 iinslidable key connection therewith meshes with the worm-gear 73. Theshaft 76 is to be clutch driven and I have shown a drive shaft 78adapted to be contimiouslyY driven and having a clutch 79 similar to thehand l clutch above described and agear connes-- ases is secured toextension 30 andx carries in guideways 52, Figs. 3 and 5, a verticallyslidable gear shifting member which has a yol'red lever 54 in engagementwith gear 33, and a rack .face 55 with which a spur pinion 5G mounted onthe 'operable stul shaft 57 meshes, said stub-shaft being rotin table tooperate said vohed lever 54 and slide shaft 25 lengthwise, thusdisengage gears 32 and 36 and bring gear 33 into mesh with gear 45. T helower end of sleeve spin dle 34 is recessed with tapered circular sides58 and threaded at 59, and inserted screwed into said recess is aspindle bearing-guide 60 which is adapted to keep the cutter end of theinner 4spindle concentric and f ree from lateral play relative to theslee-ve spindle, the wear being talrenup b), screwing seid guide 60 intothe recess. ,lfhe spindle carriage 27 is movable vertically upon thebase 13 by the rotation of shaft G1, which is mounted in an extension ofcasing 15 and has a bevel gear connection 62 with a shaft 63 which isscrew-threaded in connectionI with said carriage 27, such movementconstituting a lengthwise adjustment for the carriage and also a feedmovement.

Assuming shaft 12 to be rotating, the see ondary spindle drive-shaft 25will be rotated through bevel gears 18 and 20 and spur gears 21 and 33.With shaft25 rotating, in its position as shown in Fig. 2, sleeveextension 34 will be rotated yat a slow rate of speed through gears 32and 36; and to obtain a higher rate of' speed said shaft 25 will bemoved 'longitudinally to disengage said gear connection and move gear 33into mesh with gear 45, this movement of said shaft being accomplishedby rotating the stub-shaft 57 and operating the gear shifting lever 54.Thus the sleeve spindle ma)7 be rotated at various speeds and since theinnerspindle is splined thereto it also will be rotated simultaneouslywith said sleeve spindle, and will be allowed independent y lengthwisemovement because of said splined connection'. Feed of the cutter 37 intowork carried by the table 8 1s through .vertical movement of thecarriage 27 actuated by the` 'screw operated feed resulting fromrotating shaft 61, although said-cutter is more gen erally maintained ina stationary position and the table carrying the work reciprocatedplaner type across the cutter. The inner spindle 38 in `its modified:form may be moved by hand longitudinally" independf ent of the sleevespindle b v the rotation of the. gear 50, an extended position efsaidspindle being shown dott-ed in lfigf. i2', andY lOl) thus said siiindlemay he moved 'te proper l cutting relation to an article witl'iout-nieving the positionn i: .ser .CUh-er 37.- kdi/hen inner spindle nas.eee-. thus suitidf,

' Maanen ably adjusted, to put it into a cutting operative position,lock-nut 49 .will be tightened Yshaft 78 to be continuously driven andlockylli lit

til'

A able lengthwise within said spindle, a drive nut i9 loosened, and withthe clutch member 75 engagechby moving the clutch 'mem-- ber 79 intoIoperative. position shafts 76 and will be rotated, and the pinion-7lwill move the inner spindle 38 lengthwise in a feed or boring movementwhich is power driven and controlled by the hand clutch 79.

To retract the inner spindle both clutch members and 7 9 are disengagedand the vpinion shaft 70 is operated at its end 72 by a hand crank. With.both clutches thus disengaged it will be seen that this rotation of end72 has the same elect upon the inner spindle as that of rota-ting thepinion 50 in the modilied form of spindle, and also, vthat the twospindles may be locked together and moved simultaneously as one spindle.To maintain the spindle 38 at all times concentric with spindle 34, thetapered sleeve 60 `is provided, which may be tightened up from time totime to take up lost lateral play between said spindles.

l claim as my invention.

l. ln apparatus of the character set forth, the combination with amovable carriage, of two rotatable cutter spindles carried thereby, oneof the spindles being reciprocable within the other to various operativepositions, means for locking the reciproca- .ble spindle with said otherspindle at any one of its operative positions, and means for rotatingthe spindles.

2. ln apparatus of the character set forth, the combination with a.rotatable cutter spindle, of a cutter spindle mounted movable lengthwisewithin said spindle, a drive member adapted to be continuously driven,and a driving connection between said drive member and inner spindle formoving said inner spindle lengthwise. l

ln apparatus of the character set forth, the combination with arotatable cutter spindle, of a. cutter spindle mounted movmember adaptedto be continuously driven, a driving connection between said drivemember andinner spindle for moving said inner spindle lengthwise, and acontrol in- Aeluded in said driving connection for intermittently movingsaid spindle lengthwise. 1lln apparatus of thecharacter set forth,

the combination with ay rotatable cutterspindle and a spindle mountedmovable lengthwise within'said spindle, of a drive member, a drivingconnection between said drive member and inner spindle for moving said.inner spindle lengthwise m one direc,

tion, and means for retracting the said inner spindle.

5. ln apparatus of the character set forth,

the combination with a carriage having a feed or adjustment movement, ofa rotatable spindle journaled thereon, a spindle mounted reciprocablewithin said carriage spindle, means for rotating 'the carriage spindle,a

driving connection between the two spin-.

dles, a driving member, and a driving connection between the drivingmember and the inner spindle for reciprocating the inner spindleindependent of the said movement of the carriage.

6. ln apparatus of the character set forth, the combination with alongitudinally movable cutter spindle, of a spindle mounted movablelengthwise within said spindle, mechanisms for locking the said spindlestogether and for reciprocating the spindles in their locked position, a'drivingmemben and a driving connection between said driving member andinner spindle for reciprocating the inner spindle independent of theouter spindle when the spindles are unlocked.

7. The combination of a slideway, a carriage slidably mounted thereon, aspindlecarriage mounted upon said carriage with its axis transverse tothe slideway, the spindle-carriage being movable axially upon thecarriage, acutter spindle journaled in the spindle-carriage fixed fromaxial movement and equipped with a fixed gear, a shaft journaled in thespindle-carriage,parallel with the spindle and equipped with a gear inmesh with the spindle gear, a drive-shaft parallel with the slideway,passing through the carriage, and a gearing `drive connection betweenthe drive-shaft and the spindle-connected shaft, constructed to permitduring driving of the cutter spindle, the spindleconnected shaft to bemoved axially.

8. rl`he combination of a. slideway, a carriage slidably mountedthereon., a spindlecarriage mounted upon said carriage with its airisvtransverse to4 the slideway, the spindle-carriage being movable axiallyupon the carriage, a cutter' spindle journaled inthe spindle-carriagefixed from axialmovement and equipped with a pair of differently izedspaced ixed gears, a shaft journaled in the spindle-carriage parallelwith the spindle and being equipped with a pair of ,diii'erently sizedspaced lfixed gears which driving of the cutter spindle, the spindle-'connected shaft to be moved axially.

-9. In a milling machine spindle head, the

. combination of a pair of telescoping cutter spindles splined together,,the inner spindle being" adjustable axially relatively to the outer.spindle to various operative positions,

` -means for locking 'the inner spindlefixed against axial movement inany of its opera. :tive positions, and means for driving the outerspindle.

10. In a milling machine spindle head, the

- combination of a pair of telescoping cutter spindles splined'together, the inner Aspindle .being adjustable axially relatively to theouter spindle, means for driving the vouter Spindle, and means formoving the inner spindle axially independently of the outer spindleduring the said driving of the outer spindle.-

Il. In a milling machine spindle head, the

combination of a pair of telescoping cutter spindles, the inner spindlebeing movable axially relatively to the outer spindle, an externallythreaded and tapered sleeve about the Vinner spindle and fixed with theouter spindle, and a nut-member on said sleeve adapted to be screwedthereupon to tighten the said sleeve upon the inner spindle to effectlocking together of said spindles.

12. In a milling machine spindle head, the

combination of a pair of telescoping cutter spindles, the inner spindlemovable axiallyrelatively to the outer spindle, and a tapered sleevemounted upon the inner'spindle received into the lcutter end of theouter spindle, and adjustable axially to take up :lateral play betweenthe spindles and to maintain the spindles relatively concentric.

14. -In a milling machine spindle head, the

. combination of a pai ofvtelescoping cutter spindles splined tege er,means for driving lthe outer spindle, and'k means for feeding the innerspindle axially independently of the 3outer spindle during drivingof'said outer spindle. p

15. In a mining machine spindle had, the

I `combination of a cutter spindle movable axially and equipped at oneend with a cutter 'faceplate and a bullgear,a shaft parallel with saidspindle, movable axially and` equipped with a fixed pinion-gear in meshwith said-bull-gear, a gear splined with the pinion-gear shaft and fixedfrom axial movement, and' gear means for driving saidmasses splined gearwhereby the spindle and gearshaft maybe moved axially unit during.driving of the spindle.

16. The combinationof a slidably mounted carriage, a cutter spindlejournaled thereon fixed from axial movement and being equipped adjacentits cutter end with a fixed b'ull-gear and with a fixed gear spaced fromsaid end, said carriage having a journal bearing parallel with saidcutter spindle and disposed at one side of and intermediate the gearsthereon, a shaft journaled in said bearing` and having a fixedpinion-gear in mesh with said bull-gear and having a fixed gear disposedintermediate the gears on the spindle, means for moving the shaftaxially to withdraw its pinion gear from mesh with the bull-gear and tomove the'other gear of said shaft into mesh with the second mentionedgear on the spindle, and means for driving said shaft.

17. The combination of a slidably mounted carriage, a cutter spindlejournaled thereon fixed from axial movement and being equipped adjacentits cutter end withl a fixed bull-gear having a journal bearing parallelwith said cutter spindle and disposed at one side of and intermediatethe gears thereon, a shaft journale'd in said bearing and having a fixedpinion-gear in mesh with said bullgear and having a fixed gear disposedintermediate the gears on the spindle, the said bearing extending towithin close proximity to the bull-gear and the mounting of the shaft insaid bearing 'being such that .the shaft may be moved axially to moveits pinion-'gear into the bearing, the second gear on the shaft beingmoved into mesh with the second gear, on the spindle by this axialmovement of the shaft. and means for driving said shaft.

18. The combination of a slidably mounted carriage, a. cutter spindlejournaled therein fixed from axial movement and being equipped at itscutter lend with a fixed bullgear and spaced from said end with a secondfixed gear, said carriage having a journal bearing 'parallel with saidspindle and disposed intermediate the gears thereon, a shaft journaledin said bearing, being equipped with a fixed pinion-gear in mesh with abullgear and a fixed gear intermediate the said bearing and the secondgear on the spindle, the shaft being movable axially, the mounting ofthe shaft in said bearing being tlfat such that by movement of the shaftaxially the pinion-gear thereof may be drawn from mesh with thebull-,gear and into the bear ing, this movement carryingr the secondgear on the shaft into mesh with the second gear on the spindle, meansfor so moving the shaft axially, and means for driving said shaft.

A milling machine spindle head comprising af slldably mounted carriagehaving a journal bearing, a cutter spindle journaled therein, fixed fromaxial movement, the spindie being'extended beyond the ends of thebearingwand equipped at' each end with a jxed gean the carriage having`a second journal bearing parallel with the irst mentioned 'gear andbeing disposed at one side of and intermediate said gears on thesplndleyashaft journaled in said second bearing' movable aidallyVtherein and being equipped -vvith a pair of lixed gears vone in' meshwith one' of the gears on the spindle, the other gear on the 'shaftbeing located intermediate the bearing and the other gear' on the spin,-dle, means for moving the shaft axially for withdrawing the first namedVshaiit-v gear from mesh and for moving' the second mentioned shaft-gearinto meshlwith the other gear on the spindle, and means for driving theshaft.

20. The ,combination` of aslidevvay, a carriage slidably mountedthereon, a spindlel carriage slidably mounted on said carriagel withlits axis transverse to the slideway, the spindle carriage adapted tomoveaxially on said'carriage, a cutter spindle journaled in the spindlecarriage fixed from axial movement thereon 'and equipped with a fixedgear, a shaft journaled in the spindle carriage parallela` with thespridle and equipped with a fixed gear in mesh with the spindlev gear, adrive-shaft parallel With the slide- Way, and a gearing drive-connectionbetween the drive-shaft and spindle-connected shaft constructed topermit the spindle-connected shaft to be moved axially.

lmay be moved axially Withoutaecting the `operativeness of saiddriving-connection.

22. A milling,r machine spindle head comprising, an axially movablespindle carriage, a spindle journaled therein fixed from axial movementwith respect to the carriage and being equipped at its cutter-holdingend with a bull-gear, a shaft. journaled on the carriage parallel Withthe spindle, being movable axially with respect to the carriage andbeing equippedat one end with a pinion-gear in' meshwith the saidbull-gear, means lfor holding said shaft fixed from vaxial movement[with respect tothe carriage and, also for moving,r thesha'taxially towithdraw .its pinion-gear from the bull-gear, and meansfor driving saidshaft.l

In testimony 'whereof 'l have hereunto set my handv in' presence` .ofvtwo .subseribina1 witnesses., Y

QlHlZT R. JOHNSON. Witnesses:

' JOHN 1F. MCCANNAQ' lr... A., O.. BEHEL.

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